ايران ويج

کد: 
// C++ program to demonstrate insertion 

// into a vector of vectors 

#include <iostream> 

#include <vector> 

using namespace std; 

// Defining the rows and columns of 

// vector of vectors 

#define ROW 4 

#define COL 5 

int main() 

{ 

    // Initializing the vector of vectors 

    vector<vector<int> > vec; 

    // Elements to insert in column 

    int num = 10; 

    // Inserting elements into vector 

    for (int i = 0; i < ROW; i++) { 

        // Vector to store column elements 

        vector<int> v1; 

        for (int j = 0; j < COL; j++) { 

            v1.push_back(num); 

            num += 5; 

        } 

        // Pushing back above 1D vector 

        // to create the 2D vector 

        vec.push_back(v1); 

    } 

    // Displaying the 2D vector 

    for (int i = 0; i < vec.size(); i++) { 

        for (int j = 0; j < vec[i].size(); j++) 

            cout << vec[i][j] << " "; 

        cout << endl; 

    } 

    return 0; 

}

Ghoghnus